Causes Of A Spot On A Lung


The lungs are present on both sides of the chest cavity and are light, spongy and slightly concave cones. They are lightweight as well as elastic, made up of large number of air sacs.

If there is a spot or lesion on the lungs as per the X-ray report, it may indicate a serious threat to a person’s health. Listed below are some of the causes of spots on the lungs.


coughing, coughing up of blood and fatigue.

Tuberculosis is known to spread as a person coughs or sneezes and the other Indivisuals inhale the infected droplets. Tuberculosis is often described as a cavitating wound, when a chest x-ray is conducted, because the tuberculosis pathogen is known to eat into the lung tissue causing a cavity to form.

Noncancerous Tumors

Noncancerous tumors are known to appear as a roundish spot on the chest x-ray. Usually these kinds of tumors cause no kind of symptoms. But it has to be removed and can be difficult at many times to find out whether the tumor is cancerous or not. The doctor can determine the action that needs to be taken on the basis of risk factors such as age, the shape and size of the tumor.

A tumor which is on the lungs for more than two years and remains the same size is usually considered as noncancerous. If considered necessary, surgery can be done but it only requires a small portion of the lung tissue to be removed. The surgery may only require the person to remain only a few days in the hospital.

The most common kind of noncancerous tumors is a hamartoma which is made up of fat, calcium and cartilage. Other rare kind of noncancerous tumors are spots on the lungs caused due to the hemangioma, blood vessel tumors, lipoma and fatty tumor. Other tumors are leiomyomas which are known to contain muscle cells that comprise of nerve tissue.

Lung Cancer

Lung cancer is known to be the leading cause of cancer deaths in the United States in both men and women. Lung cancer often appears as a spot or nodule on the lungs when a chest x-ray is taken. People who smoke are at a high risk of developing this condition. There are several other risk factors which include the family history of a person, exposure to radon gas, smoke and asbestos.

There are several symptoms oflung cancer which include shortness of breath, chest pain, weight loss, hoarseness and coughing up of blood. This condition can be treated by surgical means, radiation and chemotherapy.


Granulomas are known to occur as a result of the incapability of the immune system to remove a foreign invader in the lungs. This is because if the immune system cannot eliminate it from the lungs, the cells are known to collect around the foreign, which results in the formation of a granuloma. This is known to keep the infection dormant.

Infectious granulomas are one of the most common reasons for noncancerous spots on the lungs. They are known to form as a result of exposure to histoplasma capsulatum, which is a fungus that is found in soil, bat and bird droppings or mycobacterium tuberculosis, which is a contagious airborne bacterium.